JP2018526694A - Information acquisition method, device and system - Google Patents

Abstract

The present application relates to a method, apparatus and system for obtaining information. The method is determined according to receiving hyperlink (s) included in the audio (s), sending the hyperlink (s) to the server, and hyperlink (s) from the server. Receiving one piece of information data; generating an information list based on the first information data; and displaying the information list so that a user can obtain information based on the information list; including. As can be seen from the above, the information acquisition method provided by the present application can obtain the information included in the audio without requiring human memory when the audio is played back by the playback device.

Description

CROSS REFERENCE TO RELATED APPLICATIONS Incorporated herein by reference.

  The present application relates to the field of information transmission and in particular to information acquisition methods, apparatus and systems.

  The present application provides a method, apparatus and system for obtaining information. This enables the client terminal to obtain information contained in the audio when it is played back by the playback device without requiring human memory.

  In a first aspect, an information acquisition method is provided. The method includes receiving a hyperlink included in audio, transmitting the hyperlink to a server, receiving first information data determined according to the hyperlink from the server, and first information data. Generating an information list based on the information and displaying the information list so that the user can obtain information based on the information list.

  Preferably, receiving the hyperlink included in the audio includes collecting the audio via a voice collection unit, detecting whether the audio includes hyperlink information, and audio that includes the hyperlink information. Identifying and extracting responding hyperlink information.

  Preferably, the method further comprises obtaining user preference information and transmitting the preference information to the server, wherein receiving the first information data determined according to the hyperlink from the server comprises: Receiving first information data determined according to hyperlink and preference information.

  In a second aspect, an information acquisition method is provided. The method includes receiving a hyperlink from a terminal, the hyperlink is a hyperlink included in audio received by the terminal, and the method determines first information data based on the hyperlink. And the method transmits the first information data to the terminal so that the terminal can generate an information list based on the first information data and display the information list. It is possible to obtain information based on the information list.

  Preferably, the method further comprises receiving user preference information from the terminal. Where determining the first information data based on the hyperlink includes determining the first information data based on the hyperlink and preference information.

  Preferably, the method further comprises obtaining historical data corresponding to the user identifier of the user and determining a user preference based on the historical data. Where determining the first information data based on the hyperlink includes determining the first information data based on the hyperlink and the preference.

  In a third aspect, an information acquisition device is provided. The apparatus is deployed in a terminal, and the apparatus includes a receiving unit configured to receive a hyperlink included in the audio and a transmitting unit configured to transmit the hyperlink to the server. A generating unit further configured to receive the first information data determined according to the hyperlink from the server, and the apparatus configured to generate an information list based on the first information data; A display unit configured to display an information list and allow a user to obtain information based on the information list.

  Preferably, the receiving unit is a collection subunit configured to collect audio via the audio collection unit; a detection configured to detect whether the audio collected by the collection subunit contains hyperlink information A sub-unit; and an extraction subunit configured to identify and extract hyperlink information in response to a detection subunit detecting that the audio includes hyperlink information.

  Preferably, the apparatus further comprises an acquisition unit configured to obtain user preference information, wherein the sending unit is further configured to send preference information obtained by the acquisition unit to the server, and The receiving unit is further configured to receive first information data determined according to the hyperlink and preference information from the server.

  In a fourth aspect, an information acquisition device is provided. The device is deployed on a server, the device includes a receiving unit configured to receive a hyperlink from the terminal, the hyperlink being a hyperlink included in the audio received by the terminal; A determination unit configured to determine first information data based on the link; and transmitting the first information data to the terminal, the terminal generating an information list based on the first information data; A transmission unit is included that is configured to allow an information list to be displayed and to allow a user to obtain information based on the information list.

  Preferably, the receiving unit is further configured to receive user preference information from the terminal, and the determining unit determines the first information data according to the hyperlink and preference information received by the receiving unit, Further configured.

  Preferably, the apparatus further comprises an acquisition unit configured to obtain historical data corresponding to the user identifier of the user, wherein the determination unit determines the user's preferences based on historical data obtained by the acquisition unit. , Further configured to determine the first information data according to the hyperlink and the preference.

  In a fifth aspect, an information acquisition system is provided. The system includes a playback device, a terminal, and a server. The playback device is configured to play audio, and the audio includes a hyperlink. The terminal receives the hyperlink included in the audio reproduced by the reproduction device, transmits the hyperlink to the server, receives the first information data determined according to the hyperlink from the server, and converts the hyperlink to the first information data. An information list is generated based on the information list, and the information list is displayed to allow the user to obtain information based on the information list.

  The server receives a hyperlink from the terminal, the hyperlink is a hyperlink included in the audio received by the terminal, determines first information data according to the hyperlink, and transmits the first information data to the terminal Configured to allow the terminal to generate an information list based on the first information data and to display the information list to allow a user to obtain information based on the information list Is done.

  The present application provides an information acquisition method, which first receives a hyperlink included in audio, transmits the hyperlink to a server, and receives first information data determined according to the hyperlink from the server. Then, an information list is generated based on the first information data, and the information list is displayed to allow the user to obtain information based on the information list. As can be seen from the above, the information acquisition method provided by the present application can automatically obtain the information contained in the audio without the need for human memory when the audio is played back by the playback device. it can.

3 is a flowchart of an information acquisition method provided by an embodiment of the present application. It is a schematic diagram of the user setting by the embodiment of this application. FIG. 3 is a schematic diagram of a user interface of an application according to an embodiment of the present application. FIG. 3 is a schematic diagram of a user interface of an application according to an embodiment of the present application. FIG. 3 is a schematic diagram of a user interface of an application according to an embodiment of the present application. FIG. 3 is a schematic diagram of a user interface of an application according to an embodiment of the present application. 6 is a flowchart of another information acquisition method provided by an embodiment of the present application. It is an outline figure of information category collation by an embodiment of this application. 3 is a signal flowchart of an information acquisition method provided by an embodiment of the present application. It is a structural diagram of an information acquisition device provided by an embodiment of the present application. It is a structural diagram of another information acquisition apparatus provided by the embodiment of the present application. 1 is a structural diagram of an information acquisition system provided by an embodiment of the present application.

  In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application, together with the drawings of the embodiments of the present application in an obvious and comprehensive manner, are described herein. Described in. Apparently, the described embodiments represent some but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained without any creative effort by those skilled in the art are within the protection scope of the present application.

  To facilitate an understanding of the embodiments of the present application, exemplary embodiments are described herein in greater detail in conjunction with the accompanying drawings. These embodiments should not be construed as limitations on the embodiments of the present application.

  Embodiments of the present application provide an information acquisition method. The method can be applied to any scenario that provides audio playback. For example, when the user is inside a car equipped with a car radio, the microphone of the terminal can automatically detect a hyperlink embedded in the audio played by the car radio. The terminal then interacts with the server and gets information from the server. The terminal displays the obtained information to the user at any time according to the user's needs. The terminal may be a user device such as a mobile phone, but is not limited thereto.

  FIG. 1 is a flowchart of an information acquisition method provided by an embodiment of the present application. The execution entity of this method is a terminal. As shown in FIG. 1, the method includes:

  Step 101 receives a hyperlink included in audio.

  In embodiments of the present application, audio can be collected via a sound collection unit. Detection of whether the audio includes hyperlink information can be performed. If the audio includes hyperlink information, the hyperlink information is identified and extracted.

  Specifically, the microphone of the terminal can be used as an audio collection unit. The microphone collects audio. Hyperlinks are encoded in the audio as special speech element elements that cannot be heard by the user. The audio frequency of the hyperlink can be outside the normal audible range of 20 Hz to 20 kHz. Each hyperlink has a starting point and an ending point. The audio frequency received by the microphone can be implemented to receive only hyperlinks contained in the audio.

  Usually, a microphone has two states: an active state and an inactive state. When receiving a hyperlink contained in audio via a microphone, the terminal also needs to set the microphone state to be active.

  FIG. 2 is a schematic diagram of user settings. Since the information acquisition method can be performed by an application (app) loaded into the terminal, the query state for opening the microphone may be set for the user when the app is first loaded. The query state includes two types of states: a state that opens automatically without asking and a state that asks each time it is used. 3A to 3D are schematic diagrams of an application user interface. In FIG. 3A, if the terminal receives a query state selection that opens automatically without asking from the user, the microphone does not need to check the user as to whether or not the microphone should be activated each time the app is opened. Automatically start. If the terminal receives a query state selection to ask each time it is used, each time the app is opened, the user is asked as to whether to activate the microphone. When the user receives confirmation information indicating approval of microphone activation, the microphone is activated. When the confirmation information indicating that the user does not approve the activation of the microphone is received, the microphone is not activated. If a query status selection to ask for each use is received from the user, the terminal may allow the user to check whether the microphone should be activated when not at the stage of collecting hyperlinks. . In response to receiving confirmation information from the user indicating that the microphone is not to be activated, the terminal prevents the microphone from being activated. Therefore, it saves power and reduces back-end memory occupancy to some extent. For example, after leaving a driving scenario, the microphone need not be continuously activated even if the app is open during the stage of browsing information through the app. In FIG. 3B, the user can set the information content that he wishes to subscribe to, and this information content is considered a user preference. In FIG. 3C, by finding the hyperlink included in the audio, the terminal decodes and displays the found hyperlink in the form of information. The user can open the details page for the corresponding information by clicking on the relevant information. In FIG. 3D, the terminal displays, for example, a detailed page of joint purchase discount information on the user interface.

  In order to facilitate the server to perform information selection, only information of interest to the user is sent to the terminal. The server needs to obtain a user preference list and establish user records for people and subjects, thereby establishing a selection system. The server performs information selection by a selection system. The user preference list can be obtained by active preference setting, passive preference setting or a combination of these two settings.

  In embodiments of the present application, the method may further include obtaining user preference information and sending the preference information to a server. The active preference setting can be executed by the user by the configuration of the preference setting. For example, when the app is first loaded, the user may be asked to select the range (s) or category (s) of information that he / she wants to book and receive. . The preference list can be generated by the user clicking on an item, thus completing the active preference setting.

  The server can analyze the user's history record, extract user preferences, and obtain passive preference settings. For example, when an app is first loaded, the request can be sent to a server for analyzing a user's purchase record on the Taobao website. The product range (s) and category (s) desired by the user can be extracted by analyzing records such as products of interest and products that have been bought, thus passive preferences. Complete the configuration.

  Step 102 sends a hyperlink to the server.

  After a predetermined period, the terminal sends all hyperlinks received within the predetermined period to the server. In order to reduce the memory occupancy and the computational cost of the terminal, the terminal only plays a role in identifying and collecting hyperlinks and sending the collected hyperlinks to a processing server. The server has a pre-set amount of workload for the data, thus ensuring a smooth calculation at the back end.

  Step 103 receives first information data determined by the server based on the hyperlink.

  After the terminal obtains the user preference information in advance and sends the preference information to the server, the server determines the first information data based on the hyperlink. The method includes receiving first information data determined at a server based on a hyperlink.

  Step 104 generates an information list based on the first information data.

  The terminal can insert the first information data into the application frame and generate an information list by the application installed therein. From each of the information in the information list, you can jump to the details page generated by the server. The items in the information list can be arranged according to the order of time and can be stored in the information area of the app.

  Step 105 displays the information list so that the user can obtain information based on the information list.

  In an embodiment of the present application, in response to receiving a command from the user, the terminal can open an information area of the app corresponding to the information list for display. The user can click on an item in the information list to browse to obtain information or delete the item.

  As can be seen from the above, the information acquisition method provided by the present application automatically converts information contained in audio via a terminal without requiring human memory when the audio is played back by a playback device. Can be obtained.

  FIG. 4 is a flowchart of another information acquisition method provided by the present application. The execution entity of this method is a server. As shown in FIG. 4, the method includes:

  Step 401 receives a hyperlink sent by a terminal, where the hyperlink is a hyperlink included in audio received by the terminal.

  Step 402 determines first information data based on the hyperlink.

  In embodiments of the present application, the server can determine the first information data based solely on the hyperlink, or can determine the first information data based on the hyperlink and user preferences.

  The terminal can determine user preferences. The server first receives user preference information from the terminal and then determines first information data based on the hyperlink and preference.

  Alternatively, the server can determine user preferences. The server obtains historical data corresponding to the user identifier of the user and determines the user's preference based on the historical data. The server determines first information data based on the hyperlink and the preference.

  Alternatively, the user's preferences can be initially determined at the terminal and then the preferences are updated by the server. The server receives user preference information transmitted by the terminal, obtains historical data corresponding to the user identifier of the user, updates the preference based on the historical data, and based on the hyperlink and the updated preference First information data is determined.

  In an embodiment of the present application, determining the first information data based on the hyperlink includes a process of decoding the hyperlink (s) and a process of matching and filtering the information category (s). be able to.

  Decoding hyperlinks refers to extracting information categories from the respective pages indicated by each hyperlink by the server. For example, product categories are extracted from each product page indicated by each hyperlink.

Filtering by matching category (s) refers to determining whether the information category matches the information category of the preference selection system after the information category is extracted by the hyperlink. Details can be referred to in a schematic diagram of information category matching as shown in FIG. If the determination result is affirmative, the information corresponding to the hyperlink is determined to be value information. The value information may be information on a product category in which the user is interested. The information list is generated by the server. The information list is created by a code (that is, first information data). The first information data is pushed to the terminal used by the user. If the determination result is negative, it is determined that the information corresponding to the hyperlink is garbage information. Garbage information can be product category information that the user does not care about and is removed by the server.
Step 403 transmits the first information data to the terminal, enables the terminal to generate an information list based on the first information data and display the information list, and allows the user to display the information list. To get information.

  Each piece of information in the information list can jump to a detail page generated by the server. The items in the information list are arranged in order of time and stored in the information area of the application. The user can browse and delete items by opening the information area via the terminal.

  In an embodiment of the present application, the user browses the details page and clicks on an item to activate the display. In the details page, it is possible to jump to the payment page, which facilitates the user to complete the payment on the payment page and complete the purchase of the product.

  As can be seen from the above, the information acquisition method provided by the embodiment of the present application automatically pushes information to the terminal by the server after the server receives the hyperlink from the terminal. The user can then browse the information on the terminal as needed without requiring human memory.

  FIG. 6 is a signal flowchart of an information acquisition method provided by an embodiment of the present application. The method is applicable in specific application scenarios where the user is located in an automotive environment with a car radio. A mobile phone is used as a terminal for collecting hyperlinks. As shown in FIG. 6, the method includes:

Step 1: In response to receiving a command to activate the microphone from the user, the mobile phone app sets the microphone to an active state.
Step 2: The mobile phone app detects and receives the hyperlink contained in the audio via the microphone, where the audio source is the car radio and the audio is the audio played by the car radio. It is.
Step 3: The server receives a hyperlink sent by the mobile phone app.
Step 4: The server performs data decoding on the hyperlink.
Step 5: The server filters and selects the hyperlink (s) using a pre-established filtering and selection system.
Step 6: The server generates an information list based on the selected hyperlink (s).
Step 7: The server sends the information list to the mobile phone application.
Step 8: The mobile phone application displays the information list and stores the information list locally.
Step 9: When the user clicks on an information list item for browsing, the mobile phone app makes a request to the server for a link jump.
Step 10: Upon receipt of the request, the server generates a detail page corresponding to the item.
Step 11: The server sends a detailed page to the mobile phone application. And it displays a detail page.
Step 12: In response to receiving a click from the user to direct the purchase, the mobile phone app issues a request to the server for a link jump.
Step 13: Upon receiving a request for a link jump, the server generates a payment page.
Step 14: The server sends a payment page to the mobile phone app, and the mobile phone displays the payment page.

  The information acquisition method provided by the embodiments of the present application takes into account the user's inconvenience of operating a mobile device in a driving scenario. Receiving information passively helps to improve driving safety compared to conventional modes. Using a completely new way of pushing hyperlinks makes it easy for companies to expand their channels for offline broadcasting of advertisements. The user does not need to store the broadcasted content and can store related information directly in the mobile phone, thus reducing the user's usage cost when obtaining the information. Continuous automatic push and recording completion at the back end does not compete with driving behavior, thus improving the user experience of receiving information in driving scenarios. The pushed information is linked directly to the product page, thereby effectively reducing the purchasing process.

  Assuming a link between a car radio and a mobile phone app, the embodiment of the present application pushes highly relevant information in a car scenario according to automatic decoding of voice hyperlinks, and pushes user groups. Control the number, frequency, and content category of voice hyperlinks based on data and geographic location, thereby leading to desirable effects in information accuracy and affinity.

  FIG. 7 is a structural diagram of an information acquisition apparatus provided by an embodiment of the present application. This device is deployed in a terminal. As shown in FIG. 7, the apparatus is configured to receive a hyperlink included in the audio, a receiving unit 701, and a transmitting unit 702 configured to transmit the hyperlink received by the receiving unit 701 to the server. The receiving unit 701 is further configured to receive the first information data determined by the server based on the hyperlink transmitted by the transmitting unit 702, and the first unit received by the receiving unit 701 A generating unit 703 configured to generate an information list based on the information data, and an information list generated by the generating unit 703 to allow the user to obtain information based on the information list And a display unit 704 configured to be configured.

  Preferably, the receiving unit 701 is configured to detect a collection subunit configured to collect audio via the voice collection unit and whether the audio collected by the voice collection unit includes hyperlink information. And a detection subunit configured to identify and extract hyperlink information in response to the detection subunit detecting that the audio includes hyperlink information.

  Preferably, the apparatus further comprises an acquisition unit 705 configured to obtain user preference information. There, the sending unit 702 is further configured to send the preference information obtained by the acquisition unit 705 to the server, and the first information data determined at the server based on the hyperlink and preference information The receiving unit 701 is further configured to receive.

  FIG. 8 is a structural diagram of another information acquisition apparatus provided by the embodiment of the present application. This device is deployed on a server. As shown in FIG. 8, the apparatus includes a receiving unit 801 configured to receive a hyperlink from a terminal, the hyperlink being a hyperlink included in audio received by the terminal, and the apparatus receiving A determination unit 802 configured to determine first information data based on a hyperlink received by the unit 801, and transmitting the first information data determined by the determination unit 802 to the terminal; A transmission unit 803 configured to generate an information list based on one information data, display the information list, and allow a user to obtain information based on the information list.

  Preferably, the receiving unit 801 is further configured to receive user preference information transmitted by the terminal, and the determining unit 802 is configured to receive a first link based on the hyperlink and preference information received by the receiving unit 801. Further configured to determine the information data.

  Preferably, the apparatus further includes an acquisition unit 804 configured to obtain historical data corresponding to the user identifier of the user, wherein the determination unit 802 is based on historical data obtained by the acquisition unit 804. Further configured to determine a preference.

  The determining unit 802 is further configured to determine the first information data based on the hyperlink and the preference.

  FIG. 9 is a structural diagram of an information acquisition system provided by an embodiment of the present application. As shown in FIG. 9, this system includes a playback device 901, a terminal 902, and a server 903.

  The playback device 901 is configured to play audio, and the audio includes hyperlink (s).

  The terminal 902 receives the hyperlink (s) included in the audio reproduced by the playback device 901, transmits the hyperlink (s) to the server 903, and uses the server 903 based on the hyperlink (s). Receiving the first information data to be determined, generating an information list based on the first information data, and displaying the information list to allow a user to obtain information based on the information list; Configured.

  The server 903 is configured to receive the hyperlink (s) transmitted by the terminal 902, which is the hyperlink (s) included in the audio received by the terminal 902. The server 903 also determines first information data based on the hyperlink (s), transmits the first information data to the terminal 902, and sends the information list to the terminal 902 based on the first information list. And displaying the information list to allow a user to obtain information based on the information list.

  One skilled in the art will recognize that the example objects and procedures of the example algorithm described in the embodiments disclosed herein may use electronic hardware component (s), computer software component (s), or combinations thereof. It can also be understood that it can be implemented. To clearly illustrate the compatibility of hardware and software components, the foregoing specification describes components and procedures of various embodiments according to general functionality. Whether to implement these functions in the form of hardware component (s) or software component (s) depends on the particular application and design constraints of the technical solution. Those skilled in the art can implement the described functionality using different methods for each particular application, and these embodiments are not beyond the scope of this application.

  The operations of the methods or algorithms described in the embodiments herein may be implemented using hardware component (s), processor executable software module (s), or combinations thereof. Software modules include random access memory (RAM), cache, read only memory (ROM), electrically programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable magnetic It can also be deployed on a disk, CD-ROM or any other storage medium known in the art.

  The objectives, technical solutions and beneficial effects of this application are described in more detail using the above examples. It can be understood that the above are merely specific examples of the present application and should not be used to limit the scope of protection of the present application. All modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of this application must be included in the scope of protection of this application.

Claims (13)

Receiving hyperlinks contained in the audio;
Sending the hyperlink to a server;
Receiving first information data determined according to the hyperlink from the server;
Generating an information list based on the first information data;
Displaying the information list and allowing a user to obtain information based on the information list. Receiving the hyperlink included in the audio,
Collecting audio via an audio collection unit;
Detecting whether the audio includes hyperlink information;
The information acquisition method according to claim 1, further comprising: identifying and extracting the hyperlink information in response to detecting that the audio includes the hyperlink information. Obtaining said user preference information;
Sending the information of the preference to the server, receiving the first information data determined from the server according to the hyperlink is determined from the server according to the hyperlink and the preference. The information acquisition method according to claim 1, further comprising: receiving first information data. Receiving a hyperlink transmitted from a terminal, wherein the hyperlink is a hyperlink included in audio received by the terminal;
Determining first information data based on the hyperlink;
Transmitting the first information data to the terminal, causing the terminal to generate an information list based on the first information data, displaying the information list, and allowing a user to send information based on the information list; An information acquisition method comprising: enabling to obtain.   Receiving the preference information of the user transmitted from the terminal, and determining the first information data based on the hyperlink is based on the hyperlink and the preference. The information acquisition method according to claim 4, further comprising determining the information data. Obtaining historical data corresponding to the user identifier of the user;
Determining the user's preference based on the history data, and determining the first information data based on the hyperlink is based on the hyperlink and the preference. The method according to claim 4, further comprising: determining data. An information acquisition device, wherein the device is deployed in a terminal,
A receiving unit configured to receive hyperlinks contained in the audio;
A transmitting unit configured to transmit the hyperlink to a server, wherein the receiving unit is further configured to receive first information data determined according to the hyperlink from the server Unit,
A generating unit configured to generate an information list based on the first information data;
A display unit configured to display the information list and to allow a user to obtain information based on the information list. The receiving unit is
A collection subunit configured to collect audio via an audio collection unit;
A detection subunit configured to detect whether the audio collected by the collection subunit includes hyperlink information;
An extraction subunit configured to identify and extract the hyperlink information in response to the detection subunit detecting that the audio includes the hyperlink information. The information acquisition device described in 1.   And further comprising an acquisition unit configured to obtain the user preference information, wherein the transmission unit is further configured to transmit the preference information obtained by the acquisition unit to the server, the reception unit The information acquisition device according to claim 7, further configured to receive the first information data determined according to the hyperlink and the preference from the server. An information acquisition device, wherein the device is deployed in a server,
A receiving unit configured to receive a hyperlink from a terminal, wherein the hyperlink is a hyperlink included in audio received by the terminal;
A determination unit configured to determine first information data based on the hyperlink;
Transmitting the first information data to the terminal, enabling the terminal to generate an information list based on the first information data and display the information list; An information acquisition device comprising: a transmission unit configured to be able to obtain information on the basis of.   The receiving unit is further configured to receive preference information of the user from the terminal, and the determining unit determines the first information data according to the hyperlink and the preference received by the receiving unit. The information acquisition device of claim 10, further configured to:   And further comprising an acquisition unit configured to obtain history data corresponding to a user identifier of the user, wherein the determination unit determines the user preference based on the history data obtained by the acquisition unit, and The information acquisition device of claim 10, further configured to determine the first information data according to a link and the preference. An information acquisition system including a playback device, a terminal, and a server,
The playback device is configured to play audio including hyperlinks;
The terminal receives the hyperlink included in the audio reproduced by the reproduction device, transmits the hyperlink to the server, and receives first information data determined according to the hyperlink from the server. And generating an information list based on the first information data and displaying the information list so that a user can obtain information based on the information list;
The server is configured to receive the hyperlink from the terminal, the hyperlink is the hyperlink included in the audio received by the terminal, and the server also includes the first link according to the hyperlink. 1 information data is determined, the first information data is transmitted to the terminal, and the terminal generates the information list based on the first information data and displays the information list. Configured to allow the user to obtain information based on the information list;
Information acquisition system.